||Osmunda regalis is the largest native fern in the eastern forest. Under ideal conditions, which are consistent moisture, rich soil, and shade, this fern can reach 5'High x 5'Wide. Great for pond or bog areas as it can withstand shallow water year round. The Cinnamon Fern, Osmunda cinnamomea, usually wins over the less known Royal Fern but do not rob yourself of the beauty this species offers. Just as easy to grow and equally hardy as Cinnamon Fern and has much deeper green fronds.